rrb ntpc previous year paper 09 (solutions)

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RRB NTPC Previous Year Paper 09_(Solutions)

1. Ans.(c):

Sol. Karnataka is the largest silk producing state in India, with over 9,800 metric tonnes of raw silk

produced, representing nearly 35% of the country's total silk production.

2. Ans.(b):

Sol. Let x = number of months for which Sohan joined the bussiness

1, 00, 000 × 12 ∶ 40,000 × 𝑥 ⇒ 10 × 12 : 4 × x

ATQ, 10 × 12

4 × 𝑥=

3

1 ⇒ x = 10

∴ Number of months after which Sohan joined

=12 – 10 = 2 months

3. Ans.(b); Ans.(4x + 5x) = 90 ⇒ x = 10

∴ greater angle = 50°

4. Ans.(c):

Sol. +3, +5, +7, +9 series

5. Ans.(d):

Sol. 13th observation = 16 + (16 – 15) × 12 = 28

6. Ans.(d):

Sol. Niccolao Manucci was an Italian writer and traveller. He worked in the Mughal court during Shah

Jahan rule.

7. Ans.(b):

Sol. LCM of 12, 15, 18 and 27 = 540

& 12 – 10 = 2, 15 – 13 = 2, 18 – 16

= 2 and 27 – 25 = 2

∴ Required least number = 540 – 2 = 538

8. Ans.(d):

Sol. 7480. 81408

9. Ans.(b):

Sol. The President of India Pranab Mukherjee has declared Kerala as

India's first digital state during the launch of digital empowerment

campaign at Kozhikode.

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10. Ans.(d): Sol.

I. II. 11. Ans.(c): Sol. Saina Nehwal is an Indian professional badminton singles player. A former world no. 1, she has won over 24 international titles, which includes eleven Superseries titles. 12. Ans.(c):

Sol. Average =256+563+347+651+412+321

6 =

2550

6 = 425

13. Ans.(a): Sol. Printer P= 664 + 569 + 440 + 256 + 717 = 2646 Printer U = 419 + 537 + 742 + 321 + 693 = 2712 Printer S = 552 + 438 + 527 + 651 + 582 = 2750 Printer T = 638 + 621 + 541 + 412 + 519 = 2731 14. Ans.(b):

Sol. Required ratio =441

693=

7

11

15. Ans.(b): Sol. Rhythm is the key element for music. Design is the key element for building 16. Ans.(d): Sol. The Hotaki dynasty was founded in 1709 by Mirwais Hotak at Kandahar, Afghanistan. 17. Ans.(b): Sol. Rhizobia are diazotrophic bacteria that fix nitrogen after becoming established inside the root nodules of legumes (Fabaceae) 18. Ans.(a): Sol.

Cos45° =

10

AC ⇒ AC = 10√2 m

19. Ans.(b): Sol. 3² + 5² = 34 4² + 7² = 65






20. Ans.(b): Sol. Article 21. Protection of Life And Personal Liberty: No person shall be deprived of his life or personal liberty except according to procedure established by law. 21. Ans.(d): Sol.

∴ Deepak’s share =

3

(6+3+2)× 11000

=3

11× 11000 = 3000

22. Ans.(c): Sol.

I. correct II. × (c) only conclusion 1 follows 23. Ans.(b): Sol. 2x² + 7x +6 = 0 Ans.(2x + 3) (x+ 2)= 0

x= -2 and −3

2

24. Ans.(b): Sol. The Nobel Museum is located in the former Stock Exchange Building on the north side of the square Stortorget in Gamla Stan, the old town in central Stockholm, Sweden. 25. Ans.(b):

Sol. C. V =SD

mean =

4

20=

1

5= 20%

Solutions (26-28):

26. Ans.(c): Sol. Four





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27. Ans.(b): Sol. Arun, Badhri, Rakesh 28. Ans.(a): Sol. Rakesh is the son of Eniya 29. Ans.(c): Sol. Except horse, all three animals live in jungle. 30. Ans.(d): Sol. The Kharosthi Script was more or less contemporarily with the Brahmi script, appearing around the 3rd century BCE mainly in modern-day northern Pakistan and eastern Afghanistan. 31. Ans.(c): Sol. Human baby have around 300 bones at birth – this total decreases to around 206 bones by adulthood after some bones get fused together. The bone mass in the skeleton reaches maximum density around age 21. 32. Ans.(c): Sol.

33. Ans.(d); Ans.(2 + 5 + 8) → 180 15 → 180 1 → 12 Smallest angle = 2 × 12 = 24 34. Ans.(b): Sol. 4% = (360 – 345) 4% = 15

∴ 100% =15

4× 100

CP = 375 35. Ans.(c): Sol. Anil Kapoor receives Deenanath Mangeshkar Award in 2015. Solutions (36- 38):






36. Ans.(d):

Sol. Do not know any of the three languages

= 4000 - (1350 + 1450 + 50 + 150 + 250 + 50 + 250) = 4000 – 3550 = 450

37. Ans.(c):

Sol. Students know only two languages

= 1450 + 250 + 150 = 1850

38. Ans.(d):

Sol. Students know atleast know one language

= 1350 + 50 + 1450 + 150 + 50 + 250 + 250

= 3550

39. Ans.(c):

Sol. Sum = 9 (1 + 2 + 3 + ……….30)

Average =9×30×31

30×2 =

279

2= 139.5

40. Ans.(d):

Sol. It is named after the Swedish astronomer Anders Celsius (1701–1744)

41. Ans.(a):

Sol. 8 × 12 + 16 ÷ 2 – 10

= 96 + 8 – 10

= 104 – 10

= 94

42. Ans.(c):

Sol. The planets is Jupiter, the white bands are colored by ammonia clouds, while the orange comes from

ammonium hydrosulfide clouds.

43. Ans.(c):

Sol. Lactobacillus is the bacteria which is used to convert milk into curd. Conversion of milk into curd is

done by the process called fermentation.

44. Ans.(a):

Sol. Railway Minister Suresh Prabhu presented his second Budget in

the Lok Sabha on February 25, 2016.

45. Ans.(b):

Sol. Suspended particulate matter (SPM) are finely divided solids or

liquids that may be dispersed through the air from combustion

processes, industrial activities or natural sources

46. Ans.(d):

Sol. LION, TIGER, GOAT, PEACOCK

Peacock is a bird and rest are animals





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47. Ans.(d): Sol. For half yearly Rate = 10% and T = 4 yrs

∴ Total amount = 10000 + 4000 + 600 + 40 + 1 = 14641 48. Ans.(a): Sol. In 1327, Muhammad Bin Tughluq passed an order to move his capital from Delhi to Daulatabad (in present-day Maharashtra) in the Deccan region of India. 49. Ans.(b): Sol.

50. Ans.(a):

Sol. S.D = √Variance (4.5)2 = Variance Variance = 20.25 51. Ans.(b): Sol. The Millau Viaduct is a massive cable-stayed bridge crossing the River Tarn in southern France. 52. Ans.(b): Sol. The Indra Gandhi canal is fed from the Sutlej, Beas and Ravi tributaries of the Indus River 53. Ans.(c): Sol. The President of India is the Supreme Commander of the Indian Armed Forces. Ram Nath Kovind is the current supreme commander of Indian Defense forces 54. Ans.(a): Sol. MAN = 13 + 1 – 14 = 0 SIN = 19+ 9 – 14 = 14 HOT = 8 + 15 – 20 = 3

F H N P K M E G

G O L F (Middle letters)

R T S U H J B D J L

S T I C K






55. Ans.(a): Sol. 0.08x + 0.04y = 10 4x + 2y = 500…(i) 0.2 (x – 1) + 0.4y = 24.8 2x + 4y = 250...(ii)

56. Ans.(c): Sol. The history of candy bars actually began back in 1847. The first chocolate bar was made in Britain by Joseph Fry and his son, who pressed a paste made of cocoa powder and sugar into a bar shape. 57. Ans.(a):

Sol. 63

100,

105

10,

21

10,

42

10

∴LCM of (63,105,21,42)

HCF of (100,10,10,10)=

630

10= 63

LCM = 63 58. Ans.(c): Sol. The Red Sea got its name because of a type of algae called Trichodesmium erythraeum, which is found in the sea. 59. Ans.(c): Sol. Foot have toes Hand have fingers 60. Ans.(a): Sol. The pendulum clock was invented in 1656 by Dutch scientist and inventor Christiaan Huygens, and patented the following year. 61. Ans.(a):

Sol. y =P × y × y

100 ⇒ P =

100

y

62. Ans.(d): Sol. Everest in the highest peak Jupiter is the biggest planet 63. Ans.(c): Sol. 15 – 3 + 10 × 5 ÷ 5 ⇒ 15 × 3 – 10 ÷ 5 + 5 ⇒ 45 – 2 + 5 ⇒ 48 64. Ans.(a):

Sol. 413

3=

41

3=

4

3

∴ Remainder = 1





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65. Ans.(d): Sol.

∴

66. Ans.(c): Sol. ATQ,

D

9+x= 2 (

D

9−x)

⇒ 9 − x = 2(9 + x) ⇒ x = 3 ∴ Rate of stream = 3 km/hr 67. Ans.(b):

Sol. Final loss % =60²

100= 36%

68. Ans.(a):

Sol. Distance = 90 ×5

18× 20 = 500 m

69. Ans.(b): Sol. 120% = 408

100% =408

120× 100 = 340

70. Ans.(d): Sol. 1 is correct and 2 is incorrect 71. Ans.(a): Sol. Java is the official language for Android development and is supported by Android Studio. 72. Ans.(c): Sol. Ozone is a secondary pollutant that forms from the primary pollutants such as Volatile Organic Compounds (Hydrocarbons) and nitrogen oxides (NOx) in the presence of sunlight. Its formation is mainly from the automobile emissions. 73. Ans.(c): Sol. Cricket, Hockey, Chess, Football Chess is indoor game and rest are outdoor games.

T A B L E C H I R

| | | | | | | | |

8 4 9 7 3 5 1 6 2

T E A C H E R I R

| | | | | | | | |

8 3 4 5 1 3 2 6 2






74. Ans.(c): Sol. A capacitor is a device for storing charge. It is usually made up of two plates separated by a thin insulating material known as the dielectric. One plate of the capacitor is positively charged, while the other has negative charge. 75. Ans.(c): Sol. The computer mouse as we know it today was invented and developed by Douglas Engelbart, with the assistance of Bill English, during the 1960's and was patented on November 17, 1970. 76. Ans.(c): Sol. The computer brain is a microprocessor called the central processing unit (CPU). The CPU is a chip containing millions of tiny transistors. 77. Ans.(a): Sol. Shri Sunil Arora today assumed charge as the 23rd Chief Election Commissioner (CEC) of India succeeding Shri O.P.Rawat. 78. Ans.(b): Sol. 2 ↓ 5 → 6 ← 2 ∧ 6 ⇒ 2 × 5 – 6 + 2 = 6 ⇒ 10 – 6 + 2 = 6 ⇒ 6 = 6 79. Ans.(c): Sol. In 1913 Bohr proposed his quantized shell model of the atom to explain how electrons can have stable orbits around the nucleus. The energy of an electron depends on the size of the orbit and is lower for smaller orbits. Radiation can occur only when the electron jumps from one orbit to another. 80. Ans.(b): Sol.

81. Ans.(d): Sol. There are 10 bio-geographical Zones in India. The bio-geographical province is an ecosystematic or biotic subdivision of realm. India is divided into 25 bio-geographic provinces 82. Ans.(a): Sol. The varieties of Coal that are generally found in India are Anthracite, Bituminous, Lignite, and Peat. 83. Ans.(b): Sol. Rani Lakshmibai of Jhansi, one of the most important figures of India's First War of Independence, died while fighting against the British in Gwalior.






84. Ans.(b):

Sol. The queen is the most powerful piece in the game of chess, able to move any number of squares

vertically, horizontally or diagonally. Each player starts the game with one queen, placed in the middle of

the first rank next to the king.

85. Ans.(d):

Sol. Both A and R are true but R is not the correct explanation of A

86. Ans.(c):

Sol.

100 -10 × 1000 ÷ 1000 + 100 × 10

⇒ 100 × 10 – 1000 + 1000 ÷ 100 – 10

⇒ 1000- 1000 + 10 – 10 ⇒ 0

87. Ans.(b):

Sol. The most commonly used coffee beans are Arabica and Robusta grown in the hills of Karnataka

(Kodagu, Chikkamagaluru and Hassan), Kerala (Malabar region) and Tamil Nadu (Nilgiris District,

Yercaud and Kodaikanal).

88. Ans.(b):

Sol. Fa-Hien is the famous Chinese pilgrim who visited India during the rule of Chandra Gupta II. Fa-Hien

started from China in 399 A.D. and covering all the way through the deserts came up to Peshawar.

89. Ans.(b):

Sol.

∴ Total work done by Atul in 18 days = 2×18 = 36

∴ number of days taken by Aaravya =36

3= 12

∴ Atul take 6 more days than Aaravya to do the same piece of work

90. Ans.(c):

Sol.

∴ HCF = (x + 4)

∴ a = 4

− → → −

→ +

Atul Aaravya

Efficiency 100 150

Efficiency 2 3






91. Ans.(c):

Sol. Nasir-ud-Din Mahmud Shah Tughluq was the last ruler of the Tughlaq dynasty of the Delhi.

92. Ans.(d):

Sol.

CB =h

√3

BD = h√3

∴ h√3 −h

√3= 30

h (√3 −1

√3) = 30

h (2

√3) = 30

⇒ h = 15√3 m

93. Ans.(a):

Sol. Nitrous oxide, commonly known as laughing gas or nitrous, is a chemical compound, an oxide of

nitrogen with the formula N ₂O

94. Ans.(c):

Sol.

Profit % =200

800× 100 = 25%

95. Ans.(c):

Sol. At present Kalyan Krishnamurthy holds the Flipkart CEO position

96. Ans.(d):

Sol. The planets' orbits are very nearly circular, but not quite. Each

orbit has the shape of a slightly stretched-out circle, called an ellipse

97. Ans.(b):

Sol. (2 + 6 + 7 + Y + 2)

Should be divisible by 3

If Y = 1 (minimum) Then 18 is divisible by 3





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98. Ans.(c):

Sol. 400 ×𝑥

100×

80

100= 160

x = 50% ∴ 1st Discount = (100 – 50) = 50% 99. Ans.(a): Sol. Goecha La is a high mountain pass in Sikkim, India in the Himalaya range. 100. Ans.(d): Sol. Both A and R are true but R is not the correct explanation of A.





rrb ntpc previous year paper 09 (solutions)

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